Notching press



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I Filed Nov. 14, 1945 E:=====EEEE======= BY Q AWrqgg Patented Dec. 23, 1947 UNITED STATES PATENT OFFICE NOTCHING PRESS Edward Hallander, Glen Ridge, N. J.

Application November 14, 1945, Serial No. 628,432

6 Claims. 1

This invention relates to improvements in power presses; and-the invention has reference, more'particularly, to a novel power press especially adapted for notching or slotting lamina tions for rotors, stators, and armatures of motors,

-generators and other electrical apparatus and machines.

The invention-has foran object to provide a spindle and drivin mechanism'therefor includin means for adjusting the position of said spindle relative to the notching or slotting dies of "the press, -and-a-hovel arrangement of indexing "gear train in constant mesh which is intermittently actuated and timed by a'driving Geneva gearin provision being made for quickly and easilyinterchanging and compounding the gears of saidindexing gear train.

The invention has for another object to provide the press crank-shaft with a novel clutch control 'means including means for automatically releasing a power transmission clutch and thereby stopping thepress upon-completion of a notchin'g cycle.

A further object of the invention is to provide novel means for automatically altering the operative stroke of the male or punching die of the press whereby, if desired, to provide for notch skipping operation thereof at predetermined "in.-

tervals during the progress of the notching cycle,

so as to eliminate the formation of notches at desired points in and around a lamination undergoing the notchin'g process.

Qthe'r objects of this invention, not at this time more particularly enumerated, will "be understood from the following detailed description of the same.

An illustrative embodiment of this invention is shown in the accompanying drawings, in which:

Fig. l is a side elevational view of a notching press according to this invention, partially broken away to show certain interior parts; Fig. 2 is a top plan vieva of the press; Fig. 3 is a fragmentary vertical longitudinal section, taken substantially on line 33 in Fig. 2; 'and Fig. 4 is a transverse vertical section, taken on line 4-4 in Fig. 1.

Figs. 5 and 6 are fragmentary views similar to Fig. 3, but showing the operation of the skip notch controlling means.

Fig. 7 is a fragmentary view similar to'Fig, 3, but showing a compound arrangement of the indexing gear train; and Fig. 8 is a sectional View thereof, taken online 8-'8 in Fig, 7.

Fig. 9 is a fragmentary transverse vertical's'ecticn, showing means for automatically releasing a power transmission clutch upon completion of a notching cycle.

Similar characters of reference are employed in the hereinabove described views to indicate corresponding parts.

The illustrative embodiment of the notching press as shown comprises a suitable frame structure formed by side members In and H, a top member l2 and a bottom member l3. Within the 'frame structure thus'formed is suitably placed a transverse partition member M which terminates short of the top member l2, and extending rearwardly from said transverse partition member is a'horizontal partition member l5 suitably and between saidbearings l6 and I1 is a crankshaft l8 having a central crank-portion l9. Mounted in vertically aligned relation with each other, respectively on the horizontal partition member 15 and thetop member 12, and in alignment with the crank-portion 19 of said crankshaft 18, are guide members 26 and 2! through which extends a slide member 22. Said slide member 22 is guided by said guide members for perpendicular reciprocatory movement's. Said slide member 2-2 is preferably of polygonal shape in cross-section so as to be restrained against rotation about its longitudinal axis. The lower end portion of saidslidemember '22 is connected by a pitman or connectingrod'23 with said crankportion 19 of the crank-shaft [8, whereby to be reciprocated by the latter.

Affixed to the upper end of the slide member '22 is a blanking die head 24 which is provided with a forwardly projecting punch carrier arm 25 disposed to overhang the top member l2 of the ress frame structure. Suitably mounted in said carrier arm 25 is a male die or punch 26, the

operative end of which projects freely from and ture is a female die block 21 having a female (lie aperture 28 corresponding to and opposed to the male die or punch 26. Also carried by the punch carrier arm 25 of the blanking die head 24 is a stripper plate 29 which is disposed between said carrier arm 25 and the die block 21, and which is bifurcated to straddle the operative end of the punch 29. Said stripper plate 29 is yieldably supported from the carrier arm 25 by a stem rod 35, which extends upwardly through the latter so as to be slidably engaged therewith, The upper end of said stem rod 30 is affixed to a hanger plate 3|, which is slidably supported by spaced guide posts 32 affixed to and upstanding from the upper side of said carrier arm 25. Said hanger plate 3! is yieldably urged toward the carrier arm 25 by compression springs 33 with which said guide posts are equipped, whereby, through the connecting stem rod 30, to yieldably urge the stripper plate 29 toward the female die block 27. Threaded through the hanger plate 3 I, so as to bear upon the carrier arm 25, is an adjusting screw 34, whereby the spacing of the stripper plate 29 relative to the female die block 21 may be suitably redetermined.

Mounted on the end of the crank-shaft I8 which projects exteriorly of the bearing I6 is a clutch controlled power transmission means, which may optionally be of any suitable type, such as pulley and belt, sprocket and chain or gearing, An illustrative form of such power transmission means, as shown, comprises a driven gear wheel 35 which is mounted on the exterior end portion 36 of the crank-shaft [8, so as to be freely rotatable thereon. An electric motor 31, supported in connection with the bottom member I3 of the press frame structure, furnishes a power source, power being transmitted from its armature shaft 38 by a spur gear 39 which meshes with said driven gear wheel 35.

Mounted on the crankshaft l8 between said driven gear wheel 35 and the bearing l 6 is a suitable axially expansible clutch means 40 which cooperates with a pair of clutch plates 4I-42 adapted to embrace the hub 43 of said driven gear wheel 35; the outer clutch plate 42 being axially immovable, and the inner clutch plate 4| being axially movable toward and from the gear wheel hub 43. Said clutch means 40, when axially expanded, operates to move the clutch plate 4| toward the gear wheel hub 43 so as to frictionally grip the latter between the same and the clutch plate 42, whereby to transmit operative rotary motion to the crank-shaft l 8 through said clutch means. Said clutch means 40 is provided with an external stop member 44 which, when engaged by clutch release means to be subsequently described, relaxes said clutch means 49 so as to free the driven gear wheel 35 from the grip of the clutch plates 4l--42, thereby interrupting transmission of power to the crank-shaft l8, and thus stopping the press.

The means for supporting and rotating a lamination blank L subject to the action of the notching die means comprises a carriage plate 45 which is slidably supported upon the top member [2 of the press frame structure; said carriage plate being suitably cut away to straddle the female die block 21 and the guide member 21 supporting the slide member 22. Dependent from the forward end of said carriage plate 45, through an open way 46 with which said top member l2 of the press frame structure is provided, is a perpendicular bearing column 41. Rotatably mounted in and through said bearing column 41 is a work supporting and rotating spindle 48. Said spindle 48 is provided at its upper end with a splined coupler stud or adapter 49 of reduced diameter, over which the keyway of the center opening of a lamination blank L is engaged, whereby the latter is coupled to the spindle 48 so as to be rotated thereby. Affixed to the lower end portion of said bearing column 47 is an offsetting bracket arm 50 which terminates in a bearing block 51 disposed at right angles to the axis of said column and spindle. Mounted in the transverse partition member H! of the press frame structure is a bearing 52 which is opposed to and aligned with said bearing block 5|. Journaled in and between said bearing block 5| and bearing 52 is a spindle drive shaft 53 which is provided with a longitudinal keyway 54. Mounted on said spindle drive shaft 53 and keyed to the keyway 54 thereof so as to be slidable thereon, while nevertheless rotated thereby, is a bevel gear 55 which meshes with and drives a bevel gear 56 that is fixed on the lower end of said spindle 48. The preferable ratio of said gearing 5556 is two to one.

Said carriage plate 45 and the spindle supporting and driving means connected therewith is adjustably movable toward and from the notching die means of the press, whereby to dispose the spindle 48 in adjusted spaced relation to said notching die means according to the diametrlc size of a lamination blank L desired to be operated upon. To this end an adjusting screw 5! is rotatably journaled in a supporting bearing 58 at and beneath the front end portion of the top member I 2 of the press frame structure; said adjusting screw being threaded through a nut boss 59 with which the spindle bearing column 4'1 is provided. Aflixed to the outer end of said adjusting screw 51 is a crank handle 56 by which the same may be suitably turned.

Operative between the crank-shaft l8 and the spindle drive shaft 53 is a Geneva gear actuated and timed indexing gear train suitably variable to transmit intermittent motion to the spindle riving means in such manner as to predetermine the number of notches or slots desired in any given case to be cut in a lamination blank L. To this end, the driver SI of a Geneva gearing is fixed to the crank-shaft I8 exteriorly of the bearing I? so as to be driven by said crank-shaft. Mounted in the side member I l of the press frame structure, above the crank-shaft bearing [1, is another bearing 62 in which is journaled a shaft 53. The driven member 64 of the Geneva gearing is afiixed to the outer end of said shaft 63, and afixed to the inner end of said shaft 63 is the driving gear 65 of the indexing gear train. Mounted on the rear face of the transverse partltion member I4 of the press frame structure is a bearing bracket 66 in which is journaled a shaft Fixed on the outer end of said shaft 6'! is the driven gear 68 of the indexing gear train. Affixed on the inner end of said shaft 67 is a bevel gear 69 which meshes with and drives a bevel gear 70 which is fixed on the inner end of said spindle drive shaft 53, whereby to transmit the motion of said indexing gear train thereto, and therethrough to the work supporting and rotating spindle 48,

Pivotally mounted, preferably on the inner end of the bearing 62, to swing about the axis of the driving gear 65 of the indexing gear train toward and from the driven gear 58 of the latter, is an adjustable bracket plate H upon which is adjustably supported, to project from the exposed face ber of notches to be cut, as e.,g.

rag a-1r? ative to bind andhold said bracketgplate H ina desired adjusted ,.position. The indexing gear train may be-arranged to operate on the basis of adirect ratio between the driving gear :65 and the driving gear68 throughasingle idler gear .lfi mounted on-the axle stud t'l2 of thebracketiplate "H (see Figs. -3 and 4). Under such circumstances, the ratioof the gearing 65-156 maybe varied within limits by selective use of various relative sizes of'the-gears Stand t8, whereby to determine a desired number and spacing of notches to be cut-in a given lamination blank-L and attainable with thegearratio limits so available. If it is desired tofurther increase the numin lamination blanks of larger diametric and circumferential sizes, and to such end tolincrease the ratioof the gearing 65-458 beyond limits attainable merely by use of selected relative sizes of the gears 65 and 68, this may be done by interposing compounding idler gearingbetween the latter. :In such case, a compound idlergear is mounted on the axle stud 12 of the bracket plate '5 i, and these parts are properly adjusted-so as to bring one step 71 of this compound idler gear into mesh with the driving gear 65 andso as to bring=the other step H3 thereof :into mesh with the driven gear 68 (see-Figs? and 8).

Pivotally fulcrumed at E9 on the exterior face of the side member I!) of the press frame structure is a suitably shaped, foot operable clutchrelease lever fiil. Afiixedto said clutch release levcr is a stop rod B! which is-directed toward the clutch means 49, so as-to be moved by said release lever into and out of the path of revolution ofthe clutch stop member '44. Said clutch release lever 89 and its stop rod 8| is yieldably urgedtoclutch releasing position by suitable'spring means-such e. g. as the compression spring 82 which'thrusts against a cross-pin .83 with which the stop rod 8| is provided, andwhich is purchased by a stop rod guide yoke 84; the latterbeing aflixedto the frame side-member l9.

Mounted in a housing blocktii, whichis secured to the inner face'of said frame side member i9, is a spring projected detent pin 86. Said-detent pin 86 projects exteriorly through an opening 3;

in the side frame member :l-i in position to-engage and hold said clutch release lever-8E) and its stop rod'Bl retractedto clutchstopmember disengaging position, whereby to permit the clutch means 40 to functionso'asto transmit-power-frorn the driven gear wheel .35 to the crank-shaft l8. Said detent 'pin86 is provided atdts rearward end with an axial stem 38 adapted to project exteriorly from the housing block 8 3.

Means is provided for tripping the clutch re lease lever!!!) to permit operativeclutch-releasing engagement by the stop rod 81 with :the clutch stop member 44, whereby to automatically release the clutch means All, and thus stop the press upon completion of the cycle of notching or slotting operations performed by the press upon a lamination blank L. An illustrative form of such trip means, as shown, comprises a trip lever 89 which ispivotally mounted-on the bear- .ing block 5'l-so thatits free end portion extends beneath the spindle gear 56. Affixed to and upsaid tIip cam 9|. -free endof said triplever 89 is a trip' link '94 having an inclined lowerend portion '95 which 'is'oblique to the'axis of said detent 'pin86 and its stem 88, and which isslotted at .99to straddle the latter. end portion-95 of the trip link 95 bears at one effect. plate-29 will be simultaneously lowered and yield- .ahly pressed down 'upon the'lamination blank L,

::standing .from .the free-:end :portion of :said trip lever=89 is a trip tongue "@90 which lies in the :path of 'revolution of a :trip cam 9| which is mounted onthe underside'of said spindle gear 56. Pull spring'means 92 yieldably upswingssaid trip-lever 8'9 and its trip tongue 90 to a'normal stopped position determined by :a. stop pin 93, whereby to operatively position said trip tongue 90 subject to engagement, at a proper time, by Pivotally connected with the The extremity of said inclined lower side against the face of said .housing' block'85, and at the other side against an enlargement :91 with which the free end of said .detent pin stem 8Bis provided; said enlargementbeing preferably provided by a pairof jam nuts, whereby the operative relation of said trip link 94'95 to the detent pin '86 may be properlyadjusted.

The operation of the not'ching press of this invention is as. follows:

A lamination blankL to'benotched-is mounted on the coupler stud or adapter 49 of the work supporting and rotating spindle 48, with 'an inner portion thereof slidably supported on the female die block 2? over the die aperture '28 and beneath the male die or punch 26; the adjusting-screw 51 being manipulatedto properly position the spindle 49 for support of said lamination blank L in proper relation to said dies as maybe required according to the diametric size projected by its spring behind said lever 39 so as toho-ld the same in clutch freeing position.

As the crank-shaft I8 is rotated,the same will reciprocate the slide 22 and'blanking die head 24, thus stamping the male dieor punch through the lamination blank L withnotching or slotting the punch '26 descends, the stripper whereby to hold down the latter during the notching'operation of said punch, and as the punch-thereafter ascend-s, so as to assure stripping of the lamination from the withdrawing punch.

The Geneva gearing which actuates the indexspindle-driving transmission, and thusto the spin-- die 48 and lamination blankL carried thereby, a

step by step movement of selected amplitude adapted to determine the desired number and spacing of the notches or slots cut by the punch 26 in said lamination blank L. The dwell of the Geneva gearing is timed to occur during the operative down stroke of the slide :22 and thus of the blanking die head 2i andZpunch -ZB, while the driving movement ofsaid Geneva gearing is timed :to occur :during the up or recovery "stroke of the slide 2 2, blanking die head 24 and punch 26, so that the lamination blank L is automaticallly rotatively shifted a desired distance after each notching or slotting operation, preparatory to a succeeding notching or slotting operation.

By the time the last in the required cycle of notching or slotting operations is accomplished, whereby to complete the notching or slotting of the lamination blank L, the spindle gear 59 will have completed one revolution, and, as this occurs, the trip cam 9I carried by said spindle gear 56 will engage the trip tongue 99 so as to effect downswinging movement of the trip lever 89, and accompanying downthrusting movement of the trip link 94. Downward thrust of the trip link 94 causes its oblique lower end portion 95 to exert withdrawing force upon the detent pin 86, thus removing the restraint of the latter from the clutch control lever 89, whereby the stop rod 8| is projected into the path of and so as to engage the clutch stop member 44, and thus relax the clutch means 49 so as to release the driven gear 35, and thereby automatically stop the press upon completion of the aforesaid cycle of notching and slotting operations. The press being thus automatically stopped, the completed notched or slotted lamination is removed from the spindle 48 and replaced by a new lamination blank, whereupon the described operations are repeated.

In the notching or slotting of lamination blanks, it is sometimes desirable that interruptions in the sequence of notches or slots formed therein be provided for, e. g. that notches be omitted at one or more points around the circumference of the lamination blank L. In addition to the novel notching press mechanism so far above described, this invention further provides means capable of optional use whereby to permit the automatic skipping of notch formation at desired points in and around a lamination blank L, when required. Means for attaining such result comprises mechanism operative between the slide 22 and pitman or connecting rod 23 for temporarily shifting the former relative to the latter, whereby to alter the operative stroke position of the slide 22, blanking die head 24 and punch 29 in such manner that the down stroke of the latter terminates short of the lamination blank L, so as to avoid cutting or punching of the blank under such conditions. Such mechanism, in one illustrative form thereof as shown, comprises a rotatable eccentric wrist pin 98 with which the upper end of the pitman or connecting rod 23 is pivotally engaged; said wrist pin having trunnions 99 journaled in the coupler fork sides I99 with which the lower end of the slide 22 is provided. Releasably afiixed to a trunnion 99, which is adjacent to the driven gear 68 of the indexing gear train, is a lever arm I9! having a dependent nosing I 92 at its free end. Said lever arm. is provided at its opposite end with a tail piece I93, to which is connected a pull spring I94 adapted to yieldably urge said lever I9! to a normal service position, as determined by a stop pin I95. The free end of said lever arm IBI, when disposed in normal service position, lies adjacent to a face of said driven gear 68 of the indexing gear train, and in the path of one or more actuating studs I95 which are suitably located on and a fiixed to the latter.

In use, the mechanism operates as follows:

A stud I96 is so located on the gear 68 as to operatively contact the lever arm I9I, when a movement of said gear 98 as transmitted from the Geneva gearing is in turn transmitted thereby to the spindle driving means, whereby to rotatively shift the lamination blank L beneath the punch 26 to a point at which notching is desired to be skipped. Engagement of the stud I96 with the lever arm IUI operates to upswing the latter so as to rotate the trunnions 99 and thus rotate the eccentric wrist pin 98 within the end of the pitman or connecting rod engaged therewith. The effect of such rotation of said eccentric wrist pin 98 is to lift the slide 22, blanking die head 24 and punch 26 upwardly while the crank portion I9 is at the top of its revolving circuit (see Fig. 5), and to hold said parts in such upwardly shifted position during the down stroke movement thereof as effected by the down swing of said crank-portion I9 (see Fig. 6). Owing to the displacement or alteration of the path of reciprocation of the punch 26 as thus obtained, the descending movement of said punch will terminate short of the lamination blank L, and consequently cannot punch through the same. On the ensuing lamination shifting movement of the indexing gear train, the stud I96, which engaged the lever arm nosing I92, will pass on and away therefrom, thus releasing the lever arm IGI so that its spring I94 may return the same to normal initial position, and thereby reversely rotate the eccentric Wrist pin 98 so as to permit the slide 22 and parts carried thereby to return to the normal stroke relation which again renders the punch 26 operative. Said lever arm I9! when notch skipping operation is not desired, may be moved to and secured in a non-service position. To this end, the base of the lever arm is provided with an arcuate slot I9! cooperative with a locking stud or nut means I98 which is carried by the adjacent coupler fork side I99 of the slide 22. By loosening a set screw I99 which aflixes the lever arm IIJI to a trunnion 99, said lever arm may be upswung about the latter, and then secured in such upswung out-of-service position by the locking stud and nut means I98, in which latter position the lever arm nosing I92 is held out of the path of movement of the stud I96 carried by the gear 68.

Means is provided for securing the carriage plate 45, and consequently, the work supporting and rotating spindle 48, against accidental displacement from a given position to which these parts have been adjusted. An illustrative form of such means comprises clamp plates IIB adapted to lap against portions of the carriage plate 45, whereby, when tightened down by bolts III threaded into the guide member 2|, to grip and firmly hold said carriage plate against shift,

I am aware that many changes could be made in the described mechanisms and the details of construction thereof as shown in the accompanying drawings without departing from the scope of this invention as defined by the following claims. It is therefore intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

I claim:

1. In a notching press, a frame structure, a female die mounted thereon, a perpendicular slide reciprocable in said frame structure, said slide having means to carry a male die for cooperation with said female die, means for reciprocating said slide to effect operative reciprocation of said male die toward and from said female die, said latter means comprising a crankshaft journaled. across said frame structure and err-335117" apitman' connect-ed between the same andilsaid: slide, a work; supporting androtating spindle, drivingmeans foractuating saiduspindle, an.in-' dexing earitrain adapted to actuate said spindle driving means, arGenevagearingdriven bysaid: crank-shaft to intermittently drive said indexing; gear train in timed relationto the reciprocal oper ationof said male die, and meansforzlbngitudh nally shifting. thev slide relativev to the. pitman. whereby to. alter; the operativestrokeof the male die to interrupt its notching operation for notch skipping effect with respect to: the work saidi latter means comprising a rotative eccentric wrist pin connection between said slide and pitman; leverarm. for rotating said-wrist pin, andfmeans: connectedwith a gear of said indexing gear. train; adapted to effect and timeoperative: movement of said lever. arm, comprising at. least one'stud: projecting from a. face of saidigeari andradapted to be moved by theilatter into and outof operative engagement with said lever arm.

2; A notching: press comprising a frame struc ture having atop, member, a female dietiixed on; saidtop member, ai /cooperatingreciprocable male die means supported: by said' frame structure, a. crank-shaft journaled across said frame structure for operating' said male die means, aiwork' supporting and rotating spindle. a carriage means movably mounted on said frameItop-member, said carriage meanshaving a dependent column for journaling said spindle, a drive shaft bearing carried by said column, a-splined spindle drive shaft journaled in and between the frame structure and said bearing, a driver bevelugear' splined to said spindle drive shaft, a cooperating driven'bevel gear affixed' to the lower end of said spindle, means for moving said carriage.

means to adjustablyspace said; spindle relative to said dies, an. indexinggear: train comprising a I driving gear, adriven gearzxand gearing intermediate said driving, andidriven gears, an adjustable bracket, means pivotally; mounted, in connection with.saidframeistructure for sup? porting said intermediategearing in mesh :with and between said. drivingand driven gears, and means for fixing said bracket means in adjusted position, and a Geneva gearingthe driving memberof which isfixed onand driven" by said-"crank shaft and .the driven member of which actuates the driving gear of said indexing gear train, whereby to intermittently rotate said work supporting spindle in predetermined steps in timed relation to the reciprocable operation of said male die means.

3. A notching press comprising a frame structure having a top member, a female die fixed on said top member, a cooperating reoiprocable male die means supported by said frame structure, a crank shaft journaled across said frame structure for operating said male die means, a work supporting and rotating spindle, a carriage means movably mounted on said frame top member, said carriage means having a dependent column for journaling said spindle, a drive shaft bearing carried by said column, a splined spindle drive shaft journaled in and between the frame structure and said bearing, a driver bevel gear splined to said spindle drive shaft, a cooperating driven bevel ear affixed to the lower end of said spindle, means for moving said carriage means to adjustably space said spindle relative to said dies, an indexing gear train comprising a driving gear, a driven gear and gearing intermediate said driving and driven gears, an adjustable bracket means pivotally mounted in connection with said frame structure: for supporting? said intermediate gearing: in mesh with i and between saiddriving and driven gears, and: means for fixing said bracket means in adjusted" position, v a Geneva gearing the 'drivin girnember of which is fixed on and drivenby: said crank -shaft and the driven member. ofiwh'ich actuates the driving gear of said: indexing gear train, whereby to intermittently rotate said worksupporting spindle in prodeterminedsteps in timed relation to the reciprocableoperation ofsaidmaledie means; a clutch" controlledipowertransmission means for actuating said crank-shaft; a clutch control means; znanipulatable to: condition the clutch of said power transmissionmeans for power transmitting effect,- a-xspring projected: detent' pin supported by the fi'amestructuirer and adapteduto engage and releasably hold said clutch"control means as thus: manipulated-,' spring means adaptedto move said clutch control means-to ciutohireleasing position, atri'p cam: carriedby said driven gearsof the spindle, a trip lever means pivoted to said spindle drive shaft bearing to'extend beneath said driven gear of the spindle sub'jeot to engagement bythe trip-cam of the latter, and a trip-link pivotall'y con-nected'by one end to -said -trip' lever means to: extend downwardly therefrom, the free end ofsaid trip link having an inclined-thrust por-- tion cooperative with' saiddetent means whereby toretract the: same against the tension of its actuating spring: so as to release said clutch control means'for olutch releasing movement.-

41 A'-notchingpress comprising a frame struc-' ture having a :top meniber, a female die fixed on: said top member, a cooperatingreciprooable male die means supported 'by said' frame structure, a crank -sh'ai-t journal'ed across said frame struc-- ture for-operating said male die means,- a work supporting and: rotating spindle, a carriagemeans movably mounted on said frame-top memher, said carriage meanshaving a dependent column for journaling said spindle, a drive-shaft bearing carried by said-column, asplined spindle drive shaft journaled in and between the frame structure and' said bearing; .a driver bevel gear splinedto said spindle drive shaft; acooperatingdriven bevel gearaffixedto said spindle, meansfor' moving said oarriage meanstoadjustably space saidspindlerelative to said dies, "an indexing gear train-adapted to actuate said'spindle drive shaft, a Geneva gearing the driving member of which is fixed on and driven by said crank-shaft and the driven member of which actuates said indexing gear train, whereby to intermittently rotate said work supporting spindle in predetermined steps in timed relation to the reciprocable operation of said male die means, a clutch controlled power transmission means for actuating said crankshaft, a lever operated clutch control means manipulatable to condition the clutch of said power transmission means for power transmitting effect, a spring projected detent pin supported by the frame structure and adapted to engage and releasably hold said clutch control means as thus manipulated, spring means adapted to move said clutch control means to clutch releasing position, a trip cam carried by said driven gear of the spindle, and a trip lever system actuatable by said trip cam and including means operative when so actuated to withdraw said detent pin from holding relation to said clutch control means whereby to release the power transmission clutch.

5. A notching press comprising a frame structure having a top member, a female die fixed on said top member, a cooperating reciprocable male die means supported by said frame-structure, a crank-shaft journaled across said frame structure for operating said male die means, a work supporting and rotating spindle, a carriage means movably mounted on said frame top member, said carriage means having a dependent column journaling said spindle, a drive shaft bearing carried by said column, a splined spindle drive shaft journaled in and between the frame structure and said bearing, a driver bevel gear splined to said spindle drive shaft, a cooperating driven bevel gear afiixed to said spindle, means for moving said carriage means to adjustably space said spindle relative to said dies, an indexing gear train adapted to actuate said spindle drive shaft, a Geneva gearing the driving member of which is fixed on and driven by said crank-shaft and the driven member of which actuates said indexing gear train, whereby to intermittently rotate said work supporting spindle in predetermined steps in timed relation to the reciprocable operation of said male die means, a clutch controlled power transmission means for actuating said crankshaft, a lever operated clutch control means manipulatable to condition the clutch of said power transmission means for power transmitting effect, a spring projected detent pin supported by the frame structure and adapted to engage and releasably hold said clutch control means as thus manipulated, spring means adapted to move said clutch control means to clutch releasing position, a trip cam carried by said driven gear of the spindle, a trip lever means pivoted to said spindle drive shaft bearing to extend beneath said driven gear of the spindle subject to engagement by the trip cam of the latter, and a trip link pivotally connected by one end to said trip lever means to extend downwardly therefrom, the free end of said trip link having an inclined thrust portion cooperative with said detent pin whereby to retract the same against the tension of its actuating spring so as to release said clutch control means for clutch releasing movement.

6. In a notching press, a frame structure, a female die mounted thereon, a perpendicular slide reciprocable in said frame structure, said slide having means to carry a male die for cooperation with said female die, means for reciprocating said slide to effect operative reciprocation of said male 12 die toward and from said female die, said latter means comprising a crankshaft journaled across said frame structure and a pitman connected between the same and said slide, a work supporting and rotating spindle, driving means for actuating said spindle, an indexing gear train adapted to actuate said spindle driving means, a Geneva gearing driven by said crank-shaft to intermittently drive said indexing gear train in timed relation to the reciprocal operation of said male die, and means for longitudinally shifting the slide relative to the pitman whereby to alter the operative stroke of the male die to interrupt its notching operation for notch skipping effect with respect to the work, said latter means comprising a rotative eccentric wrist pin connection between said slide and pitman, a lever arm for rotating said wrist pin, means connected with a gear of said indexing gear train adapted to effect and time operative movement of said lever arm, comprising at least one stud projecting from a face of said gear and adapted to be moved by the latter into and out of operative engagement with said lever arm, said lever arm being contiguous to said slide and having an arcuate slot therein, and a locking means extending through said slot from said slide and manipulatable to optionally clamp said lever arm in an out-of-service position to which it may be moved.

EDWARD HALLANDER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 808,694 Smith Jan. 2, 1906 880,413 Smith Feb. 25, 1908 912,007 Lindgren Feb. 9, 1909 951,169 Worton Mar. 8, 1910 1,670,648 Beyer May 22, 1928 1,784,721 Bredenberg Dec. 9, 1930 1,132,689 Seybold Mar. 23, 1915 FOREIGN PATENTS Number Country Date 457,191 France Sept. 13, 1913 401,062 Great Britain Nov. 9, 1933 

